Cannot move / sort widgets

[Jaga1973]

Hello,

I am kind of new with Domoticz, but got my e-thermostat and my smart meter running. So far so good.
Waiting for a RFXCom now to put my domotica into Domoticz as well.

But now a question about Domoticz in general.
Since I cannot find the answer anywheren, I will try it here:
I cannot move / sort my widgets. Tried to turn the option off and on in the settings, no effect.
I CAN pickup a widget and move it, but when I drop it down, it goes back to its original position.
Tried it on IE11, Google Chrome and also on the Raspberry itself (teamviewer), but no luck.

Anyone has a clue?

Jan
Netherlands